NASA hosted a media teleconference on Wednesday, September 19 to provide a status update on the Curiosity rover's mission to Mars' Gale Crater. During the briefing researchers discussed an unusual football-size rock that will be the first for the rover's arm to examine. Participants in the teleconference were Richard Cook, JPL; Mars Science Laboratory Project Manager, John Grotzinger, California Institute of Technology, Pasadena; Mars Science Laboratory Project Scientist, Mark Lemmon, Texas A&M University, College Station; Mars Science Laboratory Science Team Co-Investigator.